Viewport <#document> at [0,0] [0+0+0 800 0+0+0] [0+0+0 600 0+0+0] [BFC] children: not-inline BlockContainer at [0,0] [0+0+0 800 0+0+0] [0+0+0 164 0+0+0] [BFC] children: not-inline BlockContainer at [8,8] [8+0+0 784 0+0+8] [8+0+0 148 0+0+8] children: not-inline BlockContainer <(anonymous)> at [8,8] [0+0+0 784 0+0+0] [0+0+0 0 0+0+0] children: inline TextNode <#text> (not painted) Box at [8,8] [0+0+0 784 0+0+0] [0+0+0 148 0+0+0] [GFC] children: not-inline BlockContainer <(anonymous)> (not painted) [BFC] children: inline TextNode <#text> (not painted) BlockContainer at [28,38] [0+0+20 60 20+0+0] [0+0+20 24 20+0+0] [BFC] children: inline frag 0 from TextNode start: 0, length: 1, rect: [28,38 21.40625x24] baseline: 19.1875 "A" TextNode <#text> (not painted) BlockContainer <(anonymous)> (not painted) [BFC] children: inline TextNode <#text> (not painted) BlockContainer at [28,112] [0+0+20 60 20+0+0] [0+0+20 24 20+0+0] [BFC] children: inline frag 0 from TextNode start: 0, length: 1, rect: [28,112 14.015625x24] baseline: 19.1875 "B" TextNode <#text> (not painted) BlockContainer <(anonymous)> (not painted) [BFC] children: inline TextNode <#text> (not painted) ViewportPaintable (Viewport<#document>) [0,0 800x600] PaintableWithLines (BlockContainer) [0,0 800x164] PaintableWithLines (BlockContainer) [8,8 784x148] PaintableWithLines (BlockContainer(anonymous)) [8,8 784x0] Paintable (Box

.wrapper) [8,8 784x148] PaintableWithLines (BlockContainer

.box.a) [8,18 100x64] PaintableWithLines (BlockContainer

.box.b) [8,92 100x64] SC for Viewport<#document> [0,0 800x600] (z-index: auto) SC for BlockContainer [0,0 800x164] (z-index: auto)